水杨醛亚胺钛配合物的合成、表征及其催化乙烯聚合  

Synthesis and Characterization of Salicylaldehyde Titanium Complexes and their Catalysis Application for Ethylene Polymerization

作　　者：苏碧云[1] 潘丹丹 侯一凡 赵轩刚 闫婷玉 汪力 周瑞[1] 丁丽芹[1] SU Biyun;PAN Dandan;HOU Yifan;YAN Tingyu;WANG Li;ZHOU Ri;DING Liqin(College of Chemistry and Chemical Engineering,Xi’an Shiyou University,Xi’an 710065,China)

机构地区：[1]西安石油大学化学化工学院

出　　处：《化工技术与开发》2019年第12期5-8,共4页Technology & Development of Chemical Industry

基　　金：国家自然科学基金项目(51674200);陕西省自然科学基础研究计划资助项目(2019JM-421)

摘　　要：以水杨醛和一系列取代苯胺为原料,通过席夫碱缩合反应合成了水杨醛亚胺类配体(L1~L4),将其与钛盐前体TiCl4·2THF进一步反应,获得水杨醛亚胺钛配合物1~4。用元素、红外分析和热重等方法表征了配体和配合物的结构。将水杨醛亚胺钛配合物作为催化剂,应用于乙烯聚合催化反应,研究了亚胺基苯环上取代基的空间位阻对乙烯聚合催化剂的催化活性、分子量、分子量分布的影响。Salicylaldimine ligands(L1~L4)were synthesized by Schiff-base condensation from salicylaldehyde and a series of amines with different substituents,then reacted with titanium salt precursor TiCl4·2THF to afford four titanium complexes 1~4.Both ligands and complexes were characterized by elemental analysis,infrared spectrum and thermogravimetric analysis.As these four titanium complexes were applied in the catalytic polymerization of ethylene,the influence of substituents steric hindrance on the phenyl ring group on the catalytic activity of the catalyst was investigated.

关 键 词：水杨醛亚胺 Ti(Ⅳ)配合物 乙烯聚合 催化活性 

分 类 号：TQ643[化学工程—精细化工]